What is CVE-2026-30997?

CVE-2026-30997 is a high-severity vulnerability in Ffmpeg, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2026-04-13.

How severe is CVE-2026-30997?

High severity. CVSS v3 base score is 7.5 out of 10.

Out-of-bounds Read in Ffmpeg

CVE-2026-30997

An out-of-bounds read in the read_global_param() function (libavcodec/av1dec.c) of FFmpeg v8.0.1 allows attackers to cause a Denial of Service (DoS) via a crafted input.

Vulnerability class: Buffer Overflow

EPSS: 0.003 (26.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Ffmpeg
N/a — versions n/a

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

cve@mitre.org (Product)
cve@mitre.org (Exploit, Third Party Advisory, Mitigation)

Frequently asked questions

What is CVE-2026-30997?: CVE-2026-30997 is a high-severity vulnerability in Ffmpeg, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2026-04-13.
How severe is CVE-2026-30997?: High severity. CVSS v3 base score is 7.5 out of 10.